Diphyl
狄菲尔换热剂(二联苯及二苯氧化物)
🗣️ 情景例句
Most celebrities feel there's something extra special about themselves.
大多数名人觉得他们很特别。
Could you tell me the cost of production per unit?
请你告诉我每件成品的生产成本好吗？
Goodbye.
再见。